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CVE-2021-3869

25
FAUCET Score

CVE-2021-3869 describes an Improper Restriction of XML External Entity Reference (XXE) vulnerability in Stanford CoreNLP. This high-severity vulnerability (CVSS 7.5) allows an unauthenticated attacker to remotely compromise the confidentiality of data by exploiting XML parsing. While no active exploitation, public exploit code, or significant community discussion has been observed, the potential for data disclosure remains a concern. Organizations using Stanford CoreNLP should be aware of this XXE risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.0CPE matchmatch criteria
cpe:2.3:a:stanford:corenlp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 48th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: edu.stanford.nlp:stanford-corenlpFixed in: 4.3.1

Vendor Advisories (1)

mavenGHSA-8gf7-w3cp-gfh3high

Improper Restriction of XML External Entity Reference in Stanford CoreNLP

May 24, 2022

References

github.com / stanfordnlp/corenlp/commit/5d83f1e8482ca304db8be726cad89554c88f136a
PatchThird Party Advisory
huntr.dev / bounties/2f8baf6c-14b3-420d-8ede-9805797cd324
ExploitPatchThird Party Advisory